Hidden Codes of Smart Phones

Windows Phone

Nokia Lumia and HTC

• *#06# For Phone IMEI number
• ##634# For Diagnostics menu on Lumia, the application will appear on the application list menu. In Diagnostics following features will be available:- Accelerometer Test, ALS, Audio Loopback , Camera test, Battery Status, DTMF, Gyroscope, Hardware Buttons, Headset Detection, LCD White, Lights, Magnetometer, Nfc, Power Source, Proximity sensor test, Speaker, Touchscreen test, Vibration test,  and Bluetooth
• ##3282# , for testing 2G, 3G, and 4G data connectivity.

Android 

(Some code might not work on every Android Phone)

• *#06# For Phone IMEI number
• *#*#4636#*#* For Phone information, Usage and Battery Usage.
• *#0*# To enter Service Menu of the phone (Works on newer phone)
• *#*#34971539#*#* For phone camera details
• *#*#273282*255*663282*#*#* To backup all media files.
• *#*#232339#*#* For wireless LAN Test.
• *#*#0842#*#* For Back-light test.
• *#*#2664#*#* For Touchscreen test.
• *#*#0842#*#* For Vibration test.
• *#*#1111#*#* For FTA software version.
• *#12580*369# For phone's complete Software And Hardware Info.
• *#9090# For Diagnostic Configuration.
• *#872564# For USB logging control.
• *#9900# For system Dump Mode
• *#7465625# To view Phone Lock status
• *#901279# For HSDPA/HSUPA Control Menu.
• *2767*3855# To format Your Phone to Factory Setup.( Warning!  This will delete everything from your phone)
• *#*#7780#*#* To reset the Data Partition to Factory Setup.( Warning!  This will result into data loss from your phone)